Dernbach
The Dernbach valley
Location
Country	Germany
State	Rhineland-Palatinate
Reference no.	DE: 2377268
Physical characteristics
Source
• location	Near Ramberg
• coordinates	49°17′00″N 7°59′29″E / 49.28333°N 7.99139°E / 49.28333; 7.99139
• elevation	ca. 364 m above sea level (NN) [1]
Mouth
• location	Confluence: with the Eußerbach into the Eisbach
• coordinates	49°13′48″N 7°59′53″E / 49.23000°N 7.99806°E / 49.23000; 7.99806
• elevation	ca. 174 m above sea level (NN) [1]
Length	7.46 km [2]
Basin size	14.813 km² [2]
Basin features
Progression	Eisbach→ Queich→ Rhine→ North Sea
Landmarks	Small towns: Annweiler am Trifels Villages: Ramberg, Dernbach
Tributaries
• left	Waltersbach, Ohlsbach, Leinbach

The Dernbach is a river in the district of Südliche Weinstraße in the German state of Rhineland-Palatinate. It is 7.46 kilometres long and forms the left-hand, northern headstream of the Eisbach.

The southern part of the Dernbach runs through the central Palatine Forest. Its source is located on the eastern slopes of the Langentalkopf, the summit of which is 526 m above sea level. From its origin, the Dernbach flows in a mainly southerly direction and picks up the waters of several other small streams as well as the Waltersbach, which is just several hundred metres long and joins it from the north, before reaching the village of Ramberg. In the village itself the Ohlsbach empties into it from the east. Next, the Dernbach flows through its eponymous village where, at the northern edge of the settlement, it is joined by the Leinbach coming from the east.

Below the Vogelstockerhof farm, in the parish of Annweiler am Trifels, the Dernbach merges with the Eußerbach, which arrives from the right coming from the northwest, to form the Eisbach, a feeder of the Rhine tributary, the Queich.

In the forests around the Dernbach valley lie the ruins of three castles: Meistersel, Neuscharfeneck and Ramburg; and on the other side of the Modenbach valley are the ruins of a fourth: Frankenfelsen.